how to capture data of a scale(mettler - toledo 8530) on vb.net usb?

ok the scale is a truck scale connected to a terminal (cougar 8530) that was connected before via Rs232 now the pcs doesnt have a serial port so开发者_C百科 someoney attach a usb adapter to it the thing is i cant capture any data from it. im an developing a small program that can capture the weight of the truck (trucks are weight with the product and then re-weight with out it so they can find how much the product or products weight) so any ideas? suggestions? thanks on advance for any input

maxxxx

Is the USB adapter just a COM port? If it is it should show up as a new COM port, probably not COM1 or COM2, maybe COM3 or COM4, depends on the computer.

Try the System.IO.Ports.SerialPort.GetPortNames() function to get a string array of valid port names, and try each one to see which port the scale is connected to.